The 50mm F1.8 is far more likely to be seen doing service on APS-C format DSLRs, on which it behaves like a short telephoto portrait lens (80 mm equivalent).

Model No 2: Canon Lens EF 24-105MM F/4L IS USM

This will give you a general purpose focal range to work with. On a full frame body, 24 mm is very wide. On a 1.6x body, 24 mm is only moderately wide (equivalent of 38.4mm).

Model No 3: Canon Lens EF 50MM F/1.4 USM

The EF 50mm F1.4 USM is Canon's mid-level offering in a range stuffed full of 50mm primes, covering all budgets from the ultra-cheap 50mm F1.8 mkII through to the stratospherically-priced 50mm F1.2 L USM.

Model No 4: Canon Lens EF-S 18-135MM F/3.5-5.6 IS STM Lens

The 18-135's most attractive features are a wide (7.5x) focal length range, a relatively light weight & small package, a good IS(Image Stabilization) implementation.

Model No 5: Canon Lens EF-S 55-250mm F/4-5.6 specs

At 400 mm effective focal length the EF-S 55-250mm f/4-5.6 is ideal for amateur wildlife photography. As it is an "EF-S" lens, the 55-250 IS can only be mounted on Canon APS-C/1.6x FOVCF bodies.

Model No 6: Canon EF 50 MM F/1.8 II

The 50mm F1.8 is far more likely to be seen doing service on APS-C format DSLRs, on which it behaves like a short telephoto portrait lens (80mm equivalent).